Speer Gold Dot 147 gr. - I have a local guy who sells me the 50rd. LE packs for a good price.
When I can get that I use Winchester Personal Protection white box 147.
Nocturnal - I'm suprised by your experience with the HydraShok .40. When I carried a Glock 23 the most accurate ammo I found was the HS 155gr and my carry round for my .45 is the 230gr variety. Both were very accurate for me.
Marshallartist: perhaps I was shooting very poorly. I switched from 180 Gr FMJ to lightweight HS rounds and they went all over the place. But I only shot 10 rounds. I had a box of 20 and wanted to keep a mag full for 'just in case'. I now have a few different types of HP rounds in the trunk ready to be tested. It was fun buying a little mixed collection